1.7 Words, Equations, Tables, and Graphs

1.7 Words, Equations, Tables, and Graphs

September 03, 2020

1.7 Words, Equations, Tables, and Graphs

You have already seen that a relation may be represented as a set of ordered pairs.

You can also write a rule for the operation(s) performed on the domain value to get the range

value.

A table may list the x-coordinates (domain values), the rule,and the y-coordinates (range values).

Example: Make a table for four different domain values & write an algebraic expression for the rule.

"double a number, then add three"

State the domain & range of the relation.

1.7 Words, Equations, Tables, and Graphs

September 03, 2020

Example: Make a table for four different domain values & write an algebraic expression for the rule.

"double a number, then subtract one"

State the domain & range of the relation.

Example: Make a table for four different domain values & write an algebraic expression for the rule.

The team scores 6 points for each touchdown

State the domain & range of the relation.

1.7 Words, Equations, Tables, and Graphs

September 03, 2020

Example: Make a table for four different domain values & write an algebraic expression for the rule.

Bob spent 5 more than 3 times what Anna spent

State the domain & range of the relation.

Words, equations, tables, and graphs can be used to represent relations.

An EQUATION is a mathematical sentence stating that two quantities are equal.

Relations are often written as equations with two variables - one to represent domain values and one to

represent range values.

1.7 Words, Equations, Tables, and Graphs

September 03, 2020

Example: An assembly line produces 30 boxes per hour.

a.) Write an equation to find the amount of boxes it can produce for any number of hours.

b.) Make a table for 5, 10, 15, and 20 hours of production.

Example: The navigation message from a satellite to a GPS in an airplane is sent once every 12 minutes.

a.) Write an equation to find the number of messages sent in any number of minutes.

b.) Make a table to find the number of messages in 120, 180, 240, and 300 minutes.

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